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Metallurgy & Mine Bearings > Double row cylindrical roller bearings

Designation
Old code.
Principal Dimensions(mm)
Weight
(KG)
d
D
B
rsmin
r2smin
NNU41/630
-
630
1030
400
7.5
7.5
1340
NNU41/630K
-
630
1030
400
7.5
7.5
1330
NNU49/670
44829/670
670
900
230
6
6
413
NNU49/670K
43829/670
670
900
230
6
6
410
NN30/670
32821/670
670
980
280
7.5
7.5
535
NN30/670K
31821/670
670
980
280
7.5
7.5
530
NNU40/670
-
670
980
308
7.5
7.5
770
NNU40/670K
-
670
980
308
7.5
7.5
765
NNU41/670
-
670
1090
412
7.5
7.5
1510
NNU41/670K
-
670
1090
412
7.5
7.5
1500
NNU49/710
44829/710
710
950
243
6
6
485
NNU49/710K
43829/710
710
950
243
6
6
480
NN30/710
32821/710
710
1030
236
7.5
7.5
595
NN30/710K
31821/710
710
1030
236
7.5
7.5
590
NNU10/710
-
710
1030
315
7.5
7.5
858
NNU40/710K
-
710
1030
315
7.5
7.5
850
NNU41/710
-
710
1150
438
7.5
7.5
1800
NNU41/710K
-
710
1150
438
7.5
7.5
17900
NN48/750
-
750
920
170
5
5
243
NN48/750K
-
750
920
170
5
5
240
NNU49/750
44829/750
750
1000
250
6
6
545
NNU49/750K
43829/750
750
1000
250
6
6
540
NN30/750
32821/750
750
1090
250
7.5
7.5
712
NN30/750K
31821/750
750
1090
250
7.5
7.5
705
NNU40/750
-
750
1090
335
7.5
7.5
933
NNU40/750K
-
750
1090
335
7.5
7.5
925
NNU41/750
-
750
1220
475
9.5
9.5
2245
NNU41/750K
-
750
1200
475
9.5
9.5
2230
NNU49/800
44829/800
800
1060
258
6
6
620
NNU49/800K
43829/800
800
1060
258
6
6
615
NN30/800
32821/800
800
1150
258
7.5
7.5
798
NN30/800K
31821/800
800
1150
258
7.5
7.5
790
NNU40/800
-
800
1150
345
7.5
7.5
1150
NNU48/800K
-
800
1150
345
7.5
7.5
1140
NNU41/800
-
800
1280
475
9.5
9.5
2410
NNU41/800K
-
800
1280
475
9.5
9.5
2390
NNU49/850
44829/850
850
1120
272
6
6
365
NNU49/850K
43829/850
850
1120
272
6
6
360
NN30/850
32821/850
850
1220
272
7.5
7.5
985
NN30/850K
31821/850
850
1220
272
7.5
7.5
980
NNU40/850
-
850
1220
365
7.5
7.5
1310
NNU40/850K
-
850
1220
365
7.5
7.5
1300

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